Cosmological Imprint of the Second Law of Thermodynamics

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dc.creatorKim, Hyeong-Chan
dc.creatorLee, Jae-Weon
dc.creatorLee, Jungjai
dc.date2008-04-16
dc.date2008-06-15
dc.date.accessioned2026-07-07T11:49:54Z
dc.date.available2026-07-07T11:49:54Z
dc.descriptionWe study the evolution of the universe in the presence of inflaton, matter, radiation, and holographic dark energy. The time evolution of the scale factor is obtained by solving the Friedmann equation of the universe with a good approximation. We present two independent ways which determine the value of the dark energy constant $d\sim 1$ from the observational data. The two ways are measuring the deceleration parameter and measuring a universal constant depending only on $d$. The universal constant is given by a dimensionless combination of three scale factors at the equipartition times of radiation-matter, radiation-dark energy, and matter-dark energy. We also discuss that the second law of thermodynamics determines the point of time when the dark energy dominated era begins in the universe.
dc.description18pages, 2 figures,
dc.identifierhttps://arxiv.org/abs/0804.2579
dc.identifierhttp://arxiv.org/abs/0804.2579
dc.identifierJCAP0808:035,2008
dc.identifierdoi:10.1088/1475-7516/2008/08/035
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203398
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleCosmological Imprint of the Second Law of Thermodynamics
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